General Operation

Position Feedback

Position Sensor

Gear box

FIGURE 15. Motor with potentiometer assembly for Position operation

Current Limit Settings

The AX2500/2850 has current sensors at each of its two output stages. Every 16 ms, this current is measured and a correction to the output power level is applied if higher than the user preset value.

The current limit may be set using the controller’s switches or the supplied PC utility. Using the switches, 7 limits may be selected as shown in the table below.

TABLE 6. Current limit settings using the switches

Setting

Continuous High Amps

 

 

0

30A

 

 

1

45A

 

 

2

60A

 

 

3

75A

 

 

4

90A

 

 

5 - default

105A

 

 

6

120A

 

 

Using the PC utility is it possible to set the limit with a 1A granularity from 15A to 120A

During normal operation, current limiting is further enhance by the techniques described in the following sections.

Continuous and Extended Current Limitation

The AX2500/2850 features active current limitation with a Smart Amps control algorithm. This capability ensures that the controller will be able to work safely with practically all motor types and will adjust itself automatically for the various load conditions.

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AX2500/2850 Motor Controller User’s Manual

Version 1.7. February 1, 2005

Page 38
Image 38
RoboteQ AX2550/2850 Current Limit Settings, Continuous and Extended Current Limitation, Setting Continuous High Amps